Coalescer filter



FIG. 1 is a perspective view of a coalescer filter, embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view thereof; and,

FIG. 5 is another side elevational view thereof. 

The ornamental design for coalescer filter, as shown and described. 